Luca Guida and Florian Daniel, Supporting Reuse of Smart Contracts Through Service Orientation and Assisted Development, IEEE International Conference on Decentralized Applications and Infrastructures, San Francisco, USA, 2019.

This paper focuses on two of the key challenges a developer encounters when reusing smart contracts: finding actionable information about existing smart contracts (descriptors) and writing the necessary integration logic to invoke selected contracts and implement missing functions. As for the former issue, the paper proposes a smart contract description format that allows the developer to search for publicly available contracts, understand which features a contract exposes and how to invoke them, according to a service-oriented approach. For the latter, the paper implements a simple, model-driven development environment consisting in a visual programming editor that provides a set of modeling constructs encoding specific, reuse-oriented code patterns. The approach is implemented and demonstrated in the context of the blockchain platform Ethereum and its programming language Solidity. The results obtained show that the proposed approach can be beneficial in the development of composite smart contracts and generic blockchain applications.

Florian Daniel and Luca Guida, A Service-Oriented Perspective on Blockchain Smart Contracts, IEEE Internet Computing, vol. 23, no. 1, pp. 46-53, 2019.

Smart contracts turn blockchains into distributed computing platforms. This paper studies whether smart contracts as implemented by a state-of-the-art blockchain technology may serve as a component technology for a computing paradigm like service-oriented computing in the blockchain, in order to foster reuse and increase cost-effectiveness.